Punching-machine



(No Modl.) J. J. SULLIVAN. PUNGHING MACHINE.

No. 603,664. Patented May 10, 1 898.

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PATENT OFFICE.

JOHN J. SULLIVAN, OF TROY, NEW YORK.

PUNCHI NG-MACHINE.

SPECIFICATION formingpart of Letters Patent No. 603,664, dated May 10,1898. Application filed February 10, 1898. Serial No. 669,851- (Nomodel.)

To all whom it may concern:

Be itknown that I,JOHN J. SULLIVAN, a citizen of the United States,residing at Troy, in the county of Rensselaer and State of New York,have invented certain new and useful Improvements in Punching-Machines,of which the following is a specification, reference being had thereinto the accompanying drawings.

My invention relates to punching-machines mainly intended for use inpunching two slotholes at the same time in the rounded edge offish-plates and in which said fish-plate is so retained as to prevent itfrom tipping up while being punched and thereby preventing breaking thepunches or damaging the fishplate, as shown in the United States patentgranted. to me May 21, 1895, No. 539,493; and the objects of the presentimprovement are to provide reliable adjusting means for controlling thepressure of the slides that retain the fish-plate while it is punched. Iattain these objects by the construction illustrated in the accompanyingdrawings, in 'which Figure 1 is a side view of the punching-machine,having the pressure-adjusting means constructed in accordance with myinvention. Fig. 2 is a front view of the same. Fig. 3 represents in sideView and also in perspective railroad rails having fish plates attachedthereto, the rounded edge of which is punched with a machine constructedin accordance with my invention. Fig. 4 represents on a larger scale alongitudinal vertical section through the pressure-adjusting means ofthe machine on line x m of Fig. 5. Fig. 5 is a front View of the same.

In said drawings, A represents the frame of the punching-machine, havinga head A and the work-supporting anvil A The upper portion of the frameA has two pillars formed thereon to carry the bearings for thedriving-shaft B. Said shaft carries about the middle of its length thedriving-pulley b and upon its rear end the pinion 17 that meshes with agear-wheel O, mounted upon the punch-operating shaft .0, the lattercarrying on its front end an eccentric or other suitable well-knownmeans to vertically reciprocate in the head A the slide-box D, to whichthe punch-holder D is suitably secured. Said holder D carries at apredetermined distance apart two slotting-punchesE, having, preferably,the form shown in dotted lines in Fig. 4. On top of the anvil A aresecured the punch-dies e and the punch stripper-plates 6 The upperportion of each punch-die is shaped to not only support the bottom ofthe fish-plate P, but to present on'its front side a bearing-shoulder efor the folded round edge 19 of said fish-plate to rest against.

The means employed to retain the fishplate against the shoulder a ofeach punchdie, and particularly the adj ustability of some of thesemeans to make up for wear of the parts, constitute the main features ofmy invention. Said means consist in part of two horizontalclamping-plates F, adapted to slide upon the top of the anvil A beingguided in grooves h, formed in the under side of the plate H, that issecured on top of said anvil.

' The front end of the clamping-plates F is undercut to rest upon thebottom web of the fish-plate and at the same time force it toward theshoulder e of the punch-die. The rear end of each clamping-plate ispivoted to the upper end of an arm G, that has its lower end looselymounted or pivoted upon a horizontal rocking shaft G that is mounted inbearings secured to the front of the anvil. One end of said shaft has apendent arm G that has pivoted to its lower end one end of asubstantially horizontal rod G, that is guided in bearings secured tothe side of the anvil. The rear end or head of the rod Gr extends in thepath of a semi-annular cam 2', that is secured to and projects from theinner face of the gear-wheel O to force the clamp-plates against thefish-plate and retains it in position while being slotted, after whichthe cam i leaves the head of the rod Gfland the coiled spring 9 uponsaid rod forces it back toward the wheel 0 and releases the clamp-platesF from engagement with the fish-plate. For this purpose one end of thecoil-spring g rests against one of the bearings of the rod G while theother end presses against a collar g 'securedupon said rod.

To provide for a uniform pressure of each clamping-plate F against thefish-plate and to permit adjustment to make up for wear of the front endof said plates, each operatingarm G, as above stated, is pivoted uponthe horizontal shaft G and centrally between them there is a T-shapedarm S, the lower end of which is firmly attached to said shaft Gpreferably by'means of a key is. The central portion of the arm S issomewhat bellcrank shaped, its lower portion being horizontal, andthence standing vertically, its upper end terminating in two horizontalbranches S Its vertical portion is rigidly connected to the two arms G,but indirectly, by means of a bolt q, preferably screw-threaded at bothends, that passes through said arm and has one end in engagement with ahorizontal bar it, that unites the two arms G about the middle of theirlength. On the outer end of the bolt (1 are mounted a nut and jam-nut gThrough each branch S of the arm S setscrews u are made to pass to bearagainst the upper portion of each arm G to minutely adjust the advanceof the clamping-plates F of the machine.

Having now fully described my invention, I claim In combination with theframe of a punching-machine, its punches, and the dies thereof having ashoulder e a guide-plate secured to said frame, clamp-plates F passingunder said guide-plate, arms G having their upper ends pivoted to saidclamp-plates and their lower ends pivoted to the rocking shaft G thearms-connecting bar, the branched arm S rigidly secured to the rockingshaft, a bolt adjustably uniting the arms connection with the arm S, andadjustingscrews passing through the branching arms and bearing againstthe arms G of the clamp-plates substantially as described.

In testimony whereof I aliix my signature in presence of two witnesses.

JOHN J. SULLIVAN.

Witnesses:

JAMES V. NElL, MICHAEL MAHONY.

